podcast

International Citrus Breeders Draw Attention

Ernie Neffbreeders

Approximately 70 growers, researchers and others listened to citrus breeders from other countries discuss their programs and objectives in Lake Alfred, Florida, earlier this month. The University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) hosted the event. Michael Rogers, CREC director, provided an overview of the gathering. “This international citrus breeders symposium is …

usda

December Citrus Crop Forecast Unchanged

Daniel CooperCitrus, Crop Forecast, Grapefruit

The U.S. Department of Agriculture’s 2018-2019 Florida all-orange forecast for December is 77 million boxes, unchanged from the November forecast. If realized, this forecast will be 71 percent more than last season’s final production. The forecast consists of 32 million boxes of the non-Valencia oranges (early, midseason and Navel varieties) and 45 million boxes of Valencia oranges. Current fruit size …

HLB, irrigation, nutrition

Nursery Production Guide Being Developed

Ernie Neffnursery

A Citrus Nursery Production Guide is expected to be published by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) in five or six months. “We are going to cover the basics of nursery production,” said UF/IFAS researcher Rhuanito (Johnny) Ferrarezi. “Then we will help (with) selecting varieties. We will talk about … how to clean material, how …

Increasing Yield Through High-Density Plantings

Tacy Calliesplanting

By Rhuanito Ferrarezi, Alan Wright and Arnold Schumann High-density plantings have been tested worldwide in advanced citrus production systems (ACPS) to increase efficiency of water, fertilizer and light, and to maximize yield per area. After the onset of huanglongbing (HLB) in Florida, canopy growth reduced drastically due to negative impacts on plant health, creating the need for new plant spacing …

fungus

Visalia ACP Find Was a Breeding Population

Len WilcoxCalifornia Corner

The Asian citrus psyllids (ACP) found last week in a residential area in north Visalia, California, were a breeding population, according to Greg Douhan, University of California Cooperative Extension farm advisor for citrus. The ACP were found in four locations in the city, not in close proximity to any agricultural operations. “Most of the findings found in the San Joaquin Valley …

Components of a Healthy Citrus Soil

Tacy CalliesSoil Improvement

By Sarah Strauss and Ute Albrecht There is increasing discussion and interest in soil health from both growers and researchers. Soil health is generally synonymous with soil quality. It can impact not just sustainability, but also improve water-holding capacity, nutrient availability, yield and overall grove productivity. In citrus, soil health is particularly important because of the reduction of root mass …

florida

Decline in Florida Citrus Forecast Figures

Daniel CooperCitrus, Crop Forecast

The 2018–19 Florida orange forecast released by the U.S. Department of Agriculture on Nov. 8 is 77 million boxes, down 3 percent from the October forecast. If realized, this forecast will be 71 percent more than last season’s final production. The orange forecast consists of 32 million boxes of the non-Valencia oranges (early, midseason, and Navel varieties) and 45 million …

Guide to California’s 2019 Minimum Wage

Len WilcoxCalifornia Corner

California Citrus Mutual (CCM) has published a guide to the new minimum wage increases for agricultural employees that take effect Jan. 1, 2019, in California. Note that the rule for exemption from overtime has changed for agricultural workers. To maintain the exemption from overtime compensation, an exempt employee’s weekly salary must be no less than two times the applicable minimum …

citrus forecast

USDA Grant Could Help Florida’s Grapefruit Industry

Daniel CooperCitrus Greening, Grapefruit, HLB Management, Industry News Release

Florida’s grapefruit industry, devastated by citrus greening, may find hope in four ½-acre white-mesh screenhouses in a research field in Fort Pierce. The project will be funded by a $3.5 million grant from the U.S. Department of Agriculture (USDA) awarded to the University of Florida. Studies for the grant will take place inside and outside these structures, where 512 young …

High-Density Planting of Dwarf Citrus

Tacy CalliesCalifornia Corner

By Len Wilcox Research into high-density citrus plantings is gaining momentum at both ends of the country. In a study funded by the California Citrus Research Board, scientists are evaluating the consumption of water and other inputs used by high-density dwarf citrus trees. The scientists want to determine costs while the trees are maintaining high production levels. In Florida, researchers …

psyllid

Attract-and-Kill Device Being Developed for Psyllids

Ernie NeffPsyllids

Numerous researchers have collaborated on an attract-and-kill device that will hopefully eliminate psyllids in confined spaces, such as nurseries and citrus under protective screen (CUPS). University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Lukasz Stelinski reports on a presentation he made Oct. 25 at a citrus nursery workshop in Lake Alfred. Stelinski says researchers with UF/IFAS and …

hlb

As California HLB Detections Rise, Priorities Refocus

Daniel CooperCalifornia Corner, Citrus, Citrus Greening, HLB Management

By Brian German A series of strategic planning sessions have helped to craft a more detail-oriented approach to address the spread of Asian citrus psyllid (ACP) and management of huanglongbing (HLB) detections. As of Oct. 9, there have been 906 positive HLB detections in California. “The real hot spot for us right now is Orange County. We’re finding a lot of HLB-positive …

Effects of Homobrassinolides on HLB-Affected Trees in Florida

Tacy CalliesHLB Management, Research

By Fernando Alferez, Christopher Vincent and Tripti Vashisth In the current scenario of widespread infection and severe symptoms of HLB in Florida, horticultural practices that improve plant health in the presence of the disease are needed. For this reason, we sought to follow up on reports of positive effects of a brassinosteroid on infected plants. Brassinosteroids are a relatively newly …

Don’t Let Vine Weeds Trip You Up

Tacy Calliesweeds

By Ramdas Kanissery and Camille McAvoy Weedy vines are among the problematic and difficult to manage group of weeds in citrus. Vine weeds twine around the trees, competing with citrus for light and nutrients and causing reduction in yield and harvesting efficiency. Since vines do not have to form strong upright stems, more energy and resources can be diverted into …

long-horned beetle

New UF/IFAS Entomologist: From a Kid’s ‘Lab’ to Helping Citrus Growers

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Psyllids, Research

As a girl in her garage in Palm Bay, Florida, Lauren Diepenbrock, already a budding scientist, peered through the lens of her microscope and marveled at the magnification. “As a kid, I played in the woods and brought back all sorts of ‘finds,’ including a snake skeleton, none of which my mom allowed in the house,” said Diepenbrock, an assistant …

HLB

Whitmore Farm Focuses on HLB Research

Ernie NeffBreeding, HLB Management

More than 20 growers and others attended a tour on Oct. 11 at Whitmore Farm near Groveland in Lake County, Florida. Breeding for HLB tolerance or resistance is the primary goal of research at the farm. “Whitmore Farm was established in the mid-1950s as a foundation farm,” says Brian Scully, who led the tour and discussed research. Scully is director …

Florida orange

Florida Citrus Crop Forecast Is Good News for Growers

Tacy CalliesCrop Forecast

After finishing the 2017-18 citrus season at just 45 million boxes of oranges, Florida growers were pleased to hear that the initial orange forecast from the U.S. Department of Agriculture (USDA) for the 2018-19 season is 79 million boxes. Non-Valencia oranges came at in 34 million boxes, while Valencias are expected to be 45 million boxes. Bill Curtis, USDA agricultural …

HLB

Foliar Phosphate for the HLB Fight

Ernie NeffHLB Management

At Citrus Expo in August, Eric Triplett presented research from a variety of sources that shows foliar phosphate fertilization reduces HLB symptoms. Triplett is a University of Florida Institute of Food and Agricultural Sciences professor and chair of microbiology and cell science. “If it’s true that we can reduce the symptoms and disease in citrus by foliar phosphate fertilization, the …

farming

Has Farming Become a Political Whipping Boy?

Daniel CooperAgriculture, business, financial

By Gary Cooper Urban expansion is impacting agriculture throughout the Southeast. Florida appears to be the first state in this region to dramatically shift to a much more urban-thinking electorate. In light of this year’s primary elections, there are some points Florida agriculturists should be thinking about. I know many of you have been pondering some of this already, based …

HLB Early Detection Methods Available Now; More Coming Soon

Tacy CalliesCalifornia Corner, HLB Management

By Len Wilcox Early detection has become a vital line of defense in the California citrus grower’s war with huanglongbing (HLB) disease. Without careful monitoring, any tree in the grove can become a ticking time bomb that could lead to destruction of the entire orchard. The disease starts unnoticed. Many months can pass before a tree displays any visible evidence …